ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,429, issued on Sept. 23, was assigned to Thermo Finnigan LLC (San Jose, Calif.).
"Ducting gas of mass spectrometer" was invented by Scott T. Quarmby (Round Rock, Texas) and Joshua T. Maze (Round Rock, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A mass spectrometer includes a vacuum chamber, a pump for maintaining a vacuum chamber at an operating vacuum pressure, an ion source, a first mass filter configured to select precursor ions, a collision/reaction cell pressurized with a collision or reaction gas and configured to generate a plurality of product ions from the precursor ions by colliding or reacting the precursor ions with one or more...